Carbon dioxide fire extinguishers
extinguish fire by taking away the oxygen element of the fire triangle, and by removing the heat with a very cold discharge. Carbon dioxide extinguishers can be used on Class B and C fires.
What are Class B fire extinguishers made of?
Because of this, Class A fire extinguishers use water, while Class B fire extinguishers use
dry chemicals (foam or powder), such as aqueous film-forming foam, multi-purpose dry chemicals such as
ammonium phosphate, and halogenated agents (such as Halon 1301 and Halon 1211) or highly pressurized carbon dioxide.
What type of extinguisher is used for Class B fires?
CO2:
A carbon dioxide fire extinguisher
works on a Class B fire by expelling CO2 to suffocate the fire, removing the oxygen necessary to keep it burning.
How do you put out a Class B fire?
To extinguish a Class B fire, you want to cut off the oxygen. You can use
carbon dioxide gas
to dilute the oxygen available and stop the burning. Smothering the fire with bicarbonate (baking soda) or potassium carbonate will also work.
What are Class B extinguishers?
Class B. Class B fires involve
flammable and combustible liquids such
as gasoline, alcohol, oil-based paints, lacquers. Therefore, extinguishers with a B rating are designed to extinguish fires involving flammable and combustible liquids.
What is a Type B 1 fire extinguisher?
B-1 Extinguishers are
USCG approved
and meet the need for a Type B, Size 1 USCG approved Fire Extinguisher. Amerex B-I Fire Extinguishers must be: Dry Chemical, ABC, or Purple K: 2 lbs or larger. Carbon Dioxide (Co2): 5 lbs or larger.
Which fire is Class B fire?
Class B fire refers to a
fire involving flammable liquids such as petroleum
(gasoline, kerosene, petrol, diesel, octane, etc.), paint, alcohol, solvent, oil and tar, etc. that normally do not leave any embers or residues (or very low amounts of residues).
What are the 4 types of fires?
What are the fire safety rules?
Class A – fires involving solid materials
such as wood, paper or textiles. Class b – fires involving flammable liquids such as petrol, diesel or oils. Class c – fires involving gases.
What are the 3 methods of extinguishing a fire?
All fires can be extinguished by
cooling, smothering, starving or by interrupting the combustion process
to extinguish the fire. One of the most common methods of extinguishing a fire is by cooling with water.
What causes a Class B fire?
Class B fires are fires which involve
flammable or combustible liquids
. The presence of these liquids, which are also known as hydrocarbon fuels, represent the fuel aspect of the fire triangle (heat, fuel and oxygen) and provide the materials necessary to begin, develop and maintain a fire.
How do you stop an electrical fire?
- Disconnect the Electricity. First, disconnect the electricity to the source of the fire. …
- Use Baking Soda for Small Electrical Fires. If the fire began in an appliance or an overloaded cord, once you’ve unplugged the power source, toss baking soda over the flames. …
- Never Use Water While the Power Is On.
What are Class B fire extinguishers used for?
Class B:
Flammable liquids such as alcohol, ether, oil, gasoline and grease
, which are best extinguished by smothering. Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock.
How does a Class B fire extinguisher work?
“B” LIQUIDS
These can be fires where cooking liquids, oil, gasoline, kerosene, or paint have become ignited. Two commonly used chemicals are effective in fighting these types of fires. Monoammonium phosphate effectively smothers the fire, while
sodium bicarbonate induces a chemical reaction which extinguishes the fire
.
What does ABC mean in fire extinguisher?
Dry Chemical Extinguishers come in a variety of types. You may see them labeled: • “DC” short for “dry chem” • “ABC” indicating that
they are designed to extinguish class A,B,and C fires
, or • “BC” indicating that they are designed to extinguish class B and C fires.
What are Class B and C fires?
What types of fires can be extinguished with carbon dioxide (CO2) fire extinguishers?
Class B fires which involve flammable liquids and gases, solvents, oils, greases
(excluding cooking oils/greases in depth) tars, oil-based paints and lacquers. Class C fires which involve energized electrical equipment.
What is a Type B II fire extinguisher?
B-II Extinguishers are
USCG approved
and meet the need for a Type B, Size 2 USCG approved Fire Extinguisher. Amerex B-II Fire Extinguishers must be: Dry Chemical, ABC, or Purple K: 10 lbs or larger. Carbon Dioxide (Co2): 15 lbs or larger.
